<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1870-3542</journal-id>
<journal-title><![CDATA[Revista mexicana de física E]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fís. E]]></abbrev-journal-title>
<issn>1870-3542</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Física]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-35422008000100011</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Choque inelástico entre dos partículas: análisis basado en el coeficiente de restitución]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ferreira da Silva]]></surname>
<given-names><![CDATA[M.F]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidade da Beira Interior Departamento de Física ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2008</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2008</year>
</pub-date>
<volume>54</volume>
<numero>1</numero>
<fpage>65</fpage>
<lpage>74</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-35422008000100011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-35422008000100011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-35422008000100011&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Se estudia un choque inelástico entre dos partículas usando el coeficiente de restitución. Se obtiene su significado geométrico, y se muestran las ventajas de esta nueva formulación]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[An inelastic collision between two particles is treated using the restitution coefficient. Its geometrical interpretation is given, and the advantages of this new formulation are shown]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Choque inelástico]]></kwd>
<kwd lng="es"><![CDATA[coeficiente de restitución]]></kwd>
<kwd lng="en"><![CDATA[Inelastic collision]]></kwd>
<kwd lng="en"><![CDATA[coefficient of restitution]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="justify"><font face="verdana" size="4">Ense&ntilde;anza</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="4"><b>Choque inel&aacute;stico entre dos part&iacute;culas: an&aacute;lisis basado en el coeficiente de restituci&oacute;n</b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>M.F. Ferreira da Silva</b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>Departamento de F&iacute;sica, Universidade da Beira Interior, Rua Marqu&ecirc;s d'&Aacute;vila e Bolama, 6201&#150;001 Covilh&atilde;, Portugal, </i>e&#150;mail: <a href="mailto:mffs@ubi.pt">mffs@ubi.pt</a></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">Recibido el 6 de agosto de 2007    <br> Aceptado el 21 de agosto de 2007</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>     <p align="justify"><font face="verdana" size="2">Se estudia un choque inel&aacute;stico entre dos part&iacute;culas usando el coeficiente de restituci&oacute;n. Se obtiene su significado geom&eacute;trico, y se muestran las ventajas de esta nueva formulaci&oacute;n.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Descriptores: </b>Choque inel&aacute;stico; coeficiente de restituci&oacute;n.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>     <p align="justify"><font face="verdana" size="2">An inelastic collision between two particles is treated using the restitution coefficient. Its geometrical interpretation is given, and the advantages of this new formulation are shown.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Keywords:</b> Inelastic collision; coefficient of restitution. </font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">PACS: 45.50.Tn</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><a href="/pdf/rmfe/v54n1/v54n1a11.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Agradecimientos</b></font></p>     <p align="justify"><font face="verdana" size="2">Agradecemos al Prof. E. Segre por haber le&iacute;do el manuscrito.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Referencias</b></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">1. G. R. Fowles and G. L. Cassiday, <i>Analytical Mechanics, </i>6th ed. (Saunders College Publishing, Fort Worth, 1999), p. 287.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8448453&pid=S1870-3542200800010001100001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">2. V. D. Barger and M. G. Olsson, <i>Classical Mechanics &#150; A Modern Perspective, </i></i>2nd ed. (McGraw&#150;Hill, New York, 1995), p.<i>&nbsp;</i>128, Eq. (4.67).</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8448454&pid=S1870-3542200800010001100002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">3. J. R. Taylor, <i>Classical Mechanics </i>(University Science Books, California, 2005), p. 296, Eq. (8.11).&nbsp;</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8448455&pid=S1870-3542200800010001100003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">4. S.T. Thornton and J.B. Marion,<i> Classical Dynamics of Particles and Systems, </i>5th ed. (Brooks/Cole, Belmont, 2004), p. 351, Eq. (9.75).</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8448456&pid=S1870-3542200800010001100004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">5. H. Goldstein, C. Poole and J. Safko, <i>Classical Mechanics, </i>3rd ed. (Addison&#150;Wesley, San Francisco, 2002), pp. 115&#150;116.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8448457&pid=S1870-3542200800010001100005&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --> ]]></body><back>
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